Leveraging Cyber Ranges for Prototyping, Certification and Training: The ECHO case. - Notis Mengidis; Maya Bozhilova; Cyril Ceresola; Consuelo Assunta Colabuono; Michael Cooke; Grégory Depaix; Angel Genchev; Georgi Koykov; Wim Mees; Matteo Merialdo; Antonis Voulgaridis; Theodora Tsikrika; et al. (CSR, 2022)